If the data or control flow in and out of activities is relevant to understand the cause of the modeling error, we use the notation in the upper half of the figure.
如果活动内外的数据或控制流与理解导致建模错误的原因有关，我们将使用此图上半部分中的符号。
2
Therefore, capturing the dataflow of a process is usually an important phase in a business process modeling project.
因此，捕获流程中的数据流，通常是业务流程建模项目中的一个重要阶段。
3
For traditional modeling techniques, such as entity relationship diagram or dataflow diagram, no specific test techniques are available to date.